<form name="form1" method="post" action="" enctype="multipart/form-data" id="add_form">

<p>Nhap username: <input name="username" type="text" value="{}" /> {$form->getError('title_null')}</p>
<p>Nhap password: <textarea name="password" >{$form->sabo}</textarea> {$form->getError('sabo_null')}</p>

<p><input name="Login" type="submit" value="login"  /></p>
</form>